JPS5472032A - Diaphragm - Google Patents

Diaphragm

Info

Publication number
JPS5472032A
JPS5472032A JP13929077A JP13929077A JPS5472032A JP S5472032 A JPS5472032 A JP S5472032A JP 13929077 A JP13929077 A JP 13929077A JP 13929077 A JP13929077 A JP 13929077A JP S5472032 A JPS5472032 A JP S5472032A
Authority
JP
Japan
Prior art keywords
diaphragm
sound
high velocity
cone
suppression
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP13929077A
Other languages
Japanese (ja)
Other versions
JPS5650478B2 (en
Inventor
Takafumi Ueno
Tatsuo Fukuyama
Kenichi Takahashi
Koshin Shimada
Yoshiaki Harada
Shinichiro Ishii
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP13929077A priority Critical patent/JPS5472032A/en
Publication of JPS5472032A publication Critical patent/JPS5472032A/en
Publication of JPS5650478B2 publication Critical patent/JPS5650478B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/12—Non-planar diaphragms or cones
    • H04R7/122—Non-planar diaphragms or cones comprising a plurality of sections or layers

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Abstract

PURPOSE:To obtain high velocity of sound and large bending rigidity by providing protrusions in circumferential and raidal directions to a diaphragm metals or plastics of high velocity of sound. CONSTITUTION:A protrusion 3 provided in the cricumferential direction of a cone is effective for suppression of bending vibrations having nodes 2 is the radial direction and a protrusion 4 provided in the radial direction of the cone is effective for suppression of bending vibrations having nodes 2 in the circumferential direction. This effect may be obtained with the diaphragm constituted with metals or plastics at more than about 50% of its volume. As the process for production of the protrusions, etching is possible for the metal diaphragm and integral molding is possible for the plastic. In this way, the cone type diaphragm having high velocity of sound and large bending rigidity may be obtained.
JP13929077A 1977-11-18 1977-11-18 Diaphragm Granted JPS5472032A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13929077A JPS5472032A (en) 1977-11-18 1977-11-18 Diaphragm

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13929077A JPS5472032A (en) 1977-11-18 1977-11-18 Diaphragm

Publications (2)

Publication Number Publication Date
JPS5472032A true JPS5472032A (en) 1979-06-09
JPS5650478B2 JPS5650478B2 (en) 1981-11-28

Family

ID=15241830

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13929077A Granted JPS5472032A (en) 1977-11-18 1977-11-18 Diaphragm

Country Status (1)

Country Link
JP (1) JPS5472032A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63191799U (en) * 1987-02-16 1988-12-09

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59164686U (en) * 1983-04-19 1984-11-05 佐野　直己 tangram
JPS6129800U (en) * 1984-07-27 1986-02-22 スミダ紙工株式会社 Picture book with jigsaw puzzles
JPH0331494U (en) * 1989-08-08 1991-03-27

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49110622U (en) * 1973-01-17 1974-09-20
JPH032210U (en) * 1989-05-26 1991-01-10
JPH068885U (en) * 1992-01-13 1994-02-04 日管機材株式会社 Pipe fitting

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49110622U (en) * 1973-01-17 1974-09-20
JPH032210U (en) * 1989-05-26 1991-01-10
JPH068885U (en) * 1992-01-13 1994-02-04 日管機材株式会社 Pipe fitting

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63191799U (en) * 1987-02-16 1988-12-09

Also Published As

Publication number Publication date
JPS5650478B2 (en) 1981-11-28

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